5

The layer is switched into “work view,” allowing you to mask the layer at its original
orientation.
3 To return to your previous view (the view before you isolated the layer), click the Isolate
button again.
Active Isolate button
Note: Clicking a camera’s Isolate button activates that camera’s view.
Combining Multiple Masks
Often, you may find that it is impossible to create the mask shape you need using only
a single mask. For example, when masking something that has a hole in it, you need at
least two masks—one set to Add to mask the overall object, and a second one set to
Subtract to cut the necessary hole in the middle of it. In the following example, the only
way to mask the space between the diver’s arms and legs is to create three overlapping
masks set to Subtract.
Original object Three overlapping masks Final result
1201Chapter 20 Using Shapes, Masks, and Paint Strokes